Zoho Campaigns requires the Imprint Information merge tag to be included in every email you send, providing recipients with details about who is legally responsible for the communication.
The name of your authorised representative and a contact email address are compulsory fields within the Imprint Information. Without these completed, the merge tag won't render the required information correctly.
Go to Settings, then General, then GDPR, and complete your Imprint Information details. Once set, insert the Imprint Information merge tag into your email templates so it renders automatically in every send, rather than needing to type it manually each time.